<template>
  <div class="swipe">
    <van-swipe class="swipe-list" :autoplay="3000" indicator-color="white">
      <template v-for="(item, index) in swipeData">
        <van-swipe-item class="item">
          <img :src="item.url" alt="" />
        </van-swipe-item>
      </template>
      <template #indicator="{ active, total }">
        <div class="indicator">
          <template v-for="(value, key) in swipeGroup" :key="key">
            <span
              class="item"
              :class="{ active: swipeData[active]?.enumPictureCategory == key }"
            >
              <span class="text">{{ getName(value[0].title) }}</span>
              <span
                class="count"
                v-if="swipeData[active]?.enumPictureCategory == key"
              >
                {{ getCategoryIndex(swipeData[active]) }}/{{ value.length }}
              </span>
            </span>
          </template>
        </div>
      </template>
    </van-swipe>
  </div>
</template>

<script setup>
const props = defineProps({
  swipeData: {
    type: Array,
    default: () => [],
  },
});

const swipeGroup = {};
for (const item of props.swipeData) {
  let valueArray = swipeGroup[item.enumPictureCategory];
  if (!valueArray) {
    valueArray = [];
    swipeGroup[item.enumPictureCategory] = valueArray;
  }
  valueArray.push(item);
}
// console.log(swipeGroup);

const getName = (name) => {
  return name.replace("：", "");
};

const getCategoryIndex = (item) => {
  const valueArray = swipeGroup[item.enumPictureCategory];
  return valueArray.findIndex((data) => data == item) + 1;
};
</script>

<style lang="less" scoped>
.swipe {
  .swipe-list {
    .item {
      img {
        width: 100%;
      }
    }
  }
  .indicator {
    display: flex;
    position: absolute;
    right: 5px;
    bottom: 5px;
    padding: 2px 5px;
    font-size: 12px;
    color: #fff;
    background: rgba(0, 0, 0, 0.5);

    .item {
      margin: 0 3px;

      &.active {
        padding: 0 3px;
        border-radius: 3px;
        background-color: #fff;
        color: #333;
      }
    }
  }
}
</style>